有利于水稻白叶枯病的流行方法是（）。
A、排灌分家
B、深灌漫灌
C、早施追肥
D、施足基肥
参考答案：B
—How do you usually find out about new software?
—In the magazines like Popular Electronics. That's ________computer companies usually advertise.[ ]
A. which
B. where
C. what
D. why
作艾滋病检测前为什么要求知情同意？
